Safety handle device



C. C. FARMER SAFETY HANDLE DEVICE Feb. 2s, 192s.

Filed June 5. 1926 INVENTOR CLYDE C FARMER ATTORNEY Patented Feb. 28, 1928.

.UNITED STATES oLYnE o. FARMER, oF PITTSBURGH, PENNSYLVANIA, AssrerNonfTo THE WESTINGJ PATENT orifice.

"HOUSE AIR BRAKE COMPANY, 07F "WILMERDING, PENNSYLVANIA, A CORPORATION on PENNSYLVANIA.

SAFETY HANDLE DEVICE.

Appnauon medium 5,

This invention relates to handle devices of.

the type in which the release of thefhandle by the operator causes an application or .the brakes on a car or cars or a train.

6 lt has hereto-lore been proposed to provide a handle device adapted to be associated with the usual power controller on a car and operating upon release of the handle to effect an emergency application of the brakes.

The principal object ot' my invention is'to provide an improved handle device ofthe above character and adapted to beapplicd'to a brake valve device.

In the accompanying drawing; Fig. 1 is a" vertical section of a handle device applied to a brake valve device and embodying my rin-` vention, the handle being shown. in its den pressed position; Fig. 2 a sectional view similar to Fig. 1, and Showing thev` handle in its released position; Fig. 3 a section on the line 3-3 oit Fig. 1; Fig. f1 a detailA plan View of the yoke portion of the handle de?. vice.; and Fig. 5 aplan vieW of the key engaging member. y

As shown in the drawing, the reference numeral 1 indicates the upper portion of the casing of a brake valve device of the usual type adapted to ei'ect the control of the vbrakes on a car by the manipulation of a :io handle. A key 2 extends upwardly from the brake valve casing 1 to which an operating handle is applied in the usualv brake valvev the key 2 extends, is provided With a lug -7 havingsecured therein a pin 8.l Atvfthe opposite side, the sleeve portion 6 is provided with a tongue 9p The operating handle device comprises a handle 10 having an axial bore into which a in 11 extends, said pin being secured to the iandl'e by a rivet 12. The outer end of said pin is flattened to form a tongue 13 Which 'is adapted to engage in a corresponding slot 1926. Serial No. 113,915.k

14- cut inthe endet a yoke memberl. Said yoke member is provided with lugs 16 apertured to receive a pin 17 which extends'A through openings in the Side Walls 18 of thev` handle 10. lvVhen the yoke assembled, .the a yoke member 15 is pivotally mountediu thek pin 17 secured in the handle 10l and` has a f tongue and 'groove connection with the pin 11 to permit vertical movement of the handle relative' to the yoke men'iber.l

The yoke member 15 is lprovided With a lSlot 19 for receivingthetongue 9 of the and the yoke portions `2 0 of the? member 3 yoke member 15 are provided-near the ends iv ith half round bearing-s 21 in which the pin 17 is adapted to engage. 'l

-Theside walls 18 of the 'handle' arecon`v nectedl at the top by ay Wall 22 and at the bot-l tom by a Wall 23 and the upper-Wall 22 isprovided With an extended4 portion 24 having a rivet 25 With a roundedheadsecured therein. f

A bell crank is `pivotally mounted Within the casing l and one arm 260i said bell crank extends horizontally and is adapted to be engaged by the rounded head of the rivet 25. The other arm 27 of thebell crank ex tends vertically and is adapted to engage the stem of ay pilot valve l23. Said valve is mounted in a valve casing 29 Secured to the cap casing l and engages a disk 30 Which is subject to the pressure of a Spring 31,.. A

puppet valve 32 engages the other Side of Said disk and controls communication from a fluid `pressiue supply pipe 33 to valve chamber 34. I Chamber 34 is connectedto a safety control pipe 35 whichy communicates with Aa valve device (not shown) and adapted upon a reduction in iiuid pressure in the control pipe to etlect an emergency,application;of the brakes The arm 26. ofthe.y bell crank is provided with a pocket 36 into which a spring `37 extends, the Spring being extended into' ak pocket 38 ormedin the cap. Said Spring tends tovliorce the arm 26 downwardly so as to operate the arm 27 to effect the unseating of valve 28 and the seating of valve 32.

A sleeve 39 is secured to the member 3 vand is provided with an opening just large enough to permit the insertion of theioperating handle device. The cap 4 is also provided With au opening to permit the insertion of the handle device and also to permit a limited horizontalmovement of the handle.

To apply the handle device to the brake valve, the yoke member ot' the handle device is` inserted through the openings in the cap `and the sleever39 so that the bearings 2l engage under the pin 8.

the rivet engages the arm 26 of the bell crank. The handle 10 is then depressed, so`

as to rock the bell crank and cause the arm 27 to be retracted out of engagement with thestem` of thevalve 28, downward movement ofthe yoke member 15 being limited by engagement' ofthe pin V17' with the tongue 10, the spring 37 will act on the bell crank` arm 26so as to throw the arm 27 outwardly and cause the `valve 32 to be seated andthe valve 28 unseated. The unseating of valve 28 permits iiuid under pressure to be vented from the control pipe 35, whereby anemergency application of the brakes is effected.

The tongue and slot connect-ions between the member 6' and' the yoke 15 and between the yoke 15 andthe pin ll provide a rigid connectionthrough which` the brake valve may be operated by` rotation of the handle l()l and at the same time the tongue 13 permitsI vertical movement of the handle, as

the handle l0 is limited by engagementof a boss 40 with the upper face oi the yoke member l5. The upper edge of the opening in the cap 4; through which the handle extends, is provided with a notch 41 and the handletop wall 22 is provided with a rib 42 which can pas-s through the vnotch 4l `when it is desired'to` remove thefhandle, but which `prevents the insertion of a wedge bythe operator in case he should attempt to lock the handle depressed so as to relieve him of then'e'cessity of holding the handle depressed.

f Having now describedmy invention, what "Icl'aim as new and desire to secure by Letters Patent, is i l: In a safety handle device,`in combina- The pin 17" engages the upper face oi the tongue 9 and tion, a rotatable member, a pin carried by said member, a yoke member straddling said rotatable member and carrying a pin engaging said rotatable member, and a` handle mounted to rotate on thelast mentioned pin.

2.7In la sat'ety handle device, in combination,'a. rotatable member, a pin carried by said membeiga tongue formed on said member, a yokelmember straddling said member i and engaging saidpin and having a slot in which said tongue engages, a handle, and a pin pivotally connecting said handle to said yoke member. A

3; `In a safety handlede'vice, in combina.

tion, a rotatable member, a valve, a bell crank for operating said val-ve, ar spring `acting on said bell crank and tending to move said crank to open said valve, a handle 1 operatively connected to said rotatable mennecting saidhandle to said yoke member, said pin being adapted to engage-said projecting portion.

5. In a safety handle device, in combina.- tion, a. rotatable member, a yoke member` operatively connected to said rotatable member.y a handle, a pin secured in a socket in said handle and having a. tongue adapted to engage in a slot in said yoke member.

6. In a safety handle device, in combinapition, a rotatable member, a handle opera shown' in Fig. 2. Downward movement ot tively connected to said rotatable member and adapted for `vertical movement, a valve a bell crank operatively connecting saidA handle to said valve, a spring acting on said bell crank and adapted to oppose vertical movement ot' said handle.A c

7. In a safety handle device, in combinai tion, a rotatable member, a casing enclosing said member, a removable handle" operative'- ly connected to said member,'an opening in said casing for receiving said handle, a sleeve secured to said rotatable member and havreu ing an opening adapted in one position of I said member to aline with the opening in said casing to permit insertion of the handle. In testimony whereof I havehereunto set my hand. A

C. FARMER". 

